In my own playthrough, one of the Outcasts and Remnants factions, the Brotherhood of Gold, can be used to depose the Brotherhood of Steel. It uses factions from Outcasts and Remnants to mess around with the vanilla factions. Fallout 4’s Project Valkyrie fully embraces the influence that the Sole Survivor has over the factions that they assist and they can enact meaningful change. One of the endings even has them leading the institute but unable to force them to work for the benefit of the commonwealth. Considering the amount of influence the Sole Survivor could wield by the end of the story, it’s hard to believe that they couldn’t have metaphorically or literally slapped some sense into the different factions that they work with.
Sure, the Sole Survivor could pick one of four factions to end the game with but not all of these factions are mutually exclusive. While the game launched to positive reviews, there was plenty of criticism levelled at the game for how it limited the player’s options for roleplaying and their ability to impact the world. The alterations that the Thuggyverse makes to the game are especially impressive considering what Fallout 4’s original story was like. Picture credit: Thuggysmurf on the Fallout 4 Nexus Elder Maxon saying a new line of dialogue.